Umbrella



FIG. 1 is a front elevational view of an umbrella showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a perspective view thereof;

FIG. 8 is another perspective view thereof showing the case being detached from the umbrella;

FIG. 9 is another perspective view thereof showing the case being completely removed from the umbrella; and,

FIG. 10 is another perspective view thereof showing the case being completely removed from the umbrella and the umbrella opened. 

The ornamental design for an umbrella, as shown and described. 